Lock for house doors



Aug. 23, 1938. L, LEB'EAU L 2,128,002

' LOOK FOR HOUSE DOORS Filed Aug. 2, 1935 s Sheets-Sheet 1 Aug. 23,1938. LEBEAU 2,128,002

- LOCK FOR HOUSE DOORS Filed Aug. 2, 1935 5 Sheets-Sheet 2 Aug. 23,1938. LEBEAU 2,128,002

LOCK FOR HOUSE DOORS Filed Aug. 2, 1955 3 Sheets-Sheet 3 Patented Aug.23, 1938 PATENT OFFICE LOOK FOR HOUSE DOORS Lon Lebeau, Brussels,Belgium Application August 2,

1935, Serial No. 34,469

In Belgium August 9, 1934 6 Claims.

The present invention relates to looks and is intended to permit thedoors of homes and the like to be opened without requiring the use of akey, thus avoiding all drawbacks owing to the loss of the key.

According to my invention, the unlocking of the. lock is controlledsolely by a combination device, the operating parts of which arenon-removable.

Further according to my invention, the operation of the bolt of the lookby means of the knob or handle provided on the outside of the door'isdependent on the combination device, While the said bolt is operatedindependently of this combination device by the inside knob or handle ofthe door.

In order to avoid the possibility of detecting by sight, whenthecombination device is actuated, the combination already set, myinvention contemplates that the actuation of said parts will beaccomplished bysuccessively pushing said operating parts, each partbeing pushed a predetermined number of times, and these parts beingadvantageously formed by push-buttons intended to move the elementshereinafter termed controlling elements, which elements control theunlocking of the lock.

So that the combination device can be scattered readily, according to myinvention the displacement of the operating parts of the device isbrought about by simultaneously moving all of these parts by means of aknob or the like, or,

i in the case of house-doors, by means of two knobs or the likeconnected to each other and =provided one on each side of the door.

The button scattering the combination also serves to operate, by the aidof a cam system, a movable bar for locking the roll-back of the lock,which bar is actuated by the outside knob or o-handle of the door and isprovided with yielding means which tends to unlock the roll-back; theactuation of "the button scattering the combination is thuswithouteffect upon the opening of the door.

In a preferred embodiment of my invention, the controlling elements ofsaid combination device are formed by racks which are longitudinallymoved by pawls (or elastic blades serving as pawls), and which areoperated by depressing 50 .said push-buttons, whereby said racks, whenthey all" are individually set to a determined position,

are disposed out of the path of the locking bar, so thatthe latter maybe moved.

So that identical racks may be used, according 12130 my invention theinitial or locking position of the racks, which position is obtained forexample by operating the button for scattering the combination, isdifferent for every rack and is dependent on the respective figures ofthe combination, so that the different racks are brought, by the properoperation of the push-buttons, into an unlocking position, said racksbeing provided with prolongations of variable and adjustable lengths,for a purpose to be developed hereinafter.

A slide adapted to move transversely with respect to said racks and totransmit its own motion to the locking bar, for instance by means of alever-system, is provided with a series of studs which lie in a straightline and, when the bolt is in its locked position, these studs aredisposed between said racks, said studs being restrained againstsidewise movement by the lateral sides of the racks, and being adaptedto slide, together with the locking bar, to a position in which thelocking bar releases the locking bolt, in. grooves cut transverselyacross a predetermined point along the length of the racks. This lockingbar has a projection cooperating with an inclined portion provided on amovable plate operated by the button or buttons for scattering thecombination, whereby the bolt is locked when the combination isscattered.

In a preferred embodiment of the invention, one end of each of the saidelastic blades which serve as pawls, is fixed, and the blades areprovided with a curved portion positioned between said fixed end and themovable end of the blade, which latter enters the teeth of the rack, thepush-buttons bearing on the curved portions of said blades, tending toelongate them flat, so that they will advance the corresponding racks.

The accompanying drawings illustrate by way of example a practicalembodiment of the invention, but the construction shown therein is to beunderstood as illustrative only and not as defining the limits of theinvention.

Fig. 1 is a diagrammatic view of different parts operating the bolt ofthe lock, said parts being shown in the position for mounting.

Fig. 2 is a plan View of a portion of the lock intended for operatingthe bolt of the lock and the locking bar.

Fig. 3 is a plan view of the lock showing the racks and the lockingslide.

Fig. 4 is a section on the line AA of Fig. 3.

Fig. 5 is a diagrammatic view of a rack.

Fig. 6 is a transverse section of a detail showing the arrangement foroperating a rack.

Fig. 7 is a view of the lock as seen from the outside of the door.

Fig. 8 is a view of the look as seen from the inside of the door.

Referring to Fig. 1 it will be seen that the bolt 2 of the lock isactuated by two knobs or handles 3 and 3a provided respectively on theoutside and the inside of the door. The knob 3 is secured on a shafthaving a square portion 4 on which is fitted a roll-back 5, as Well as acylindrical portion 6 which is loosely engaged in the inside knob 3a.The knob 3a is provided with two pins 317 (Fig. l) engaging recesses laand lb provided on" An internally-threadeda second roll-back l. stud 8is fitted inside of the hollow space 30 of the knob 311 so that it canbe screwed on the threaded end 6a provided on the cylindrical portion 6.

-6 and thus has no effect on the roll-back 5. At

the same time, since its pins 32) engage the recesses la and lb of theroll-back i, the latter contacts the bolt 2 by means of the engagementof the surfaces l0 and M with the surfaces 20 and 2d, moving the boltout of its keeper.

The immobilization of the shoulder 5d of the roll-back 5 in itsinoperable position is accomplished (Fig. 2) by a locking bar 9 adaptedto move longitudinally so as to clear the trajectory ofsaid shoulder 5d.This locking bar 9 is acted on by a lever Ill fulcrumed at Ma andconnected toa slide H mounted for transverse displacement with respectto the lock guided by pins I la. The displacement ofthe bar 3 so thatthe shoulder 5d can be rotated by the outside handle 3 for: unlocking isbrought about by a spring l2 which biases the slide 5 l, as soon as thepins such as are shown at l3, are allowed to move. Movement of the slideII to the left rocks the lever l3, pulling the upper arm downwardly, andwith it the slide 9, out of the path of the roll-back 5. The slide H. isalso provided with a pin i l, the function of which is to cause saidslide I l to move in the, direction corresponding to the raising of thevlocking ,bar -9 (to the right in Fig. 2) when operated by, the buttonsfor scattering the combination, such as are shownat i5 andv It in Figs.'7 and 8..

The locking bar 9, the lever l0 and the slide I I (Fig. 2) are coveredby a plate ll provided with slots Ila forguiding the racks in a mannerto be described hereinafter, and with a slot l'lb for guidingthe'locking slide 20 (Figs. 3 and 4) As shown in Fig. 5, the racks suchas !8 are ;.of T-cross .section (Fig. 4) and are adapted to slide bymeans of their thin middle portion in slots Ila of the plate ll. Asshown in Fig. 4, the racks l8 may be held against undesired movement bymeans of spring means He bearing against washers 11d, whereby the racksare pressed pairwise against the cover of the lock.

Each of the racks-is provided at the same position along its length witha groove- 18a (Fig. 3), designed topermit the-passage of pins suchas..1n-

7 ,;dicated at l3 (Fig. .2); and these. racksare each When the knob 3 isrotated,. the roll back 5, which possesses a shoulder 5a, operates, bymeans of this shoulder, a projection Zaof the ve-rse grooves l8a willregister in front of the pins i3 shown in dotted lines in Fig. 3, sothat these pins, together with the slide H, can move across said groovesunder the action of the spring l2. It is to be noted, however, that thislateral movement of the slide II is not possible unless the lockingplate 20, which is slidably guided in the slotllb, has disengaged thepin l4 of the slide.

The locking plate 20 is operated by moving the buttons I5 and I6.

Assuming the different racks to be in the position shown in Fig. 3, thenin order to unlock the door, different buttons such as 2| (Fig. '7), aresuccessively depressed as many times as corresponds to the differentdigits of the combination.

The successive pressures thus exerted cause the racks to advancestep-by-step, owing to the device shown in Fig. 6. This device comprisesa flexible blade 22 which is secured at 22a to the door frame, and thefree end 221) of which engages, at each depression of the button 2|, atooth of the rack so as to cause this rack to advance a step. As soon aseach rack has advanced a number of steps corresponding to a figure ofthe combination (as, for instance, 6352 in the case of Fig. 3), theslide II will be free to move under the action of the spring l2 with theresult that the locking bar 9 will be disengaged from the shoulder 5dand the operation of the roll-back 5 by the outside knob 3 is possible.

In order to lock the door, the plate 20 with which the buttons l5 and I6for scattering the combination are adapted to cooperate, will be raised.so that the pin IA of the slide II will first be pushed aside (to theright in Fig. 3) by the action of the inclined surface 20a (Fig. 3) (theplate 20 thus constituting a cam plate), provided on the outer face ofsaid plate 20 in order to raise the slide 9 to its locking position.Owing togthetransverse part 2012, said plate 20 will then operate theracks so as to bring them into the position illustrated in Fig. 3.

.The present invention is not limited to the embodiment;described by wayof example, but the invention is to be understood as fully commensuratewith the appended claims.

What I claim is:

1. A combination lock, adapted particularly for household use,comprising a bolt, a knob for said bolt, a roll-back removably securedto said knobiand adapted to engage, and operate said bolt, means forlocking said roll-back, means for manipulatingsaid locking means, rackscontrolling the; displacement of said manipulating means,.means operableaccording to a code for bringing said racks into a position whereinthemanipulating means, andv hence. the locking means, are released,whereby the roll-back is unlocked and can. be manipulated. bysaid knob,

2. A combination lock, adapted particularly for household use,comprising a bolt, a knob for said bolt, a roll-back removably securedto said knob and adapted to engage and operate said bolt, a locking barfor locking said roll-back, a slide and a system of levers connectedtheretoand to said locking bar, a plurality of racks controlling thedisplacement of said slide and said system of levers, and hence of thelocking bar, a plurality of push buttons disposed in such manner as,when actuated according to a code, to displace the racks into a positionwherein the slide, the system of levers and locking bar unlock theroll-back so that the latter can be rotated by said knob, and a camplate adapted to act simultaneously only on the slide and system oflevers, and on the racks, so as to bring the locking bar into itslocking position and to hold it there.

3. A combination lock, adapted particularly for household use,comprising a bolt, a knob for said bolt, a roll-back removably securedto said knob and adapted to engage and operate said bolt, a locking barfor locking said roll-back, a slide and a system of levers connectedthereto and to said locking bar, a plurality of racks controlling thedisplacement of said slide and said system of levers, and hence of thelocking bar, prolongations disposed on each rack, the said prolongationsbeing of Variable length regulable according to a code, a plurality ofpush buttons disposed in such manner as, when actuated according to saidcode, to displace the racks into a position wherein the slide, thesystem of levers and the locking bar unlock the roll-back so that thelatter can be rotated by said knob, and a cam plate adapted to actsimultaneously on the slide and system of levers, and on the racks, soas to bring the locking bar into its locking position and to hold itthere.

4. A combination lock, adapted particularly for household use,comprising a bolt, a knob for said bolt, a roll-back removably securedto said knob and adapted to engage and operate said bolt, a locking barfor locking said roll-back, a slide and a system of levers connectedthereto and to said locking bar, a pin on said slide, a springconstantly tending to move said slide into a position wherein thelocking bar is caused to unlock the roll-back, racks controlling thedisplacement of the slide and system of levers, and hence of the lockingbar, prolongations disposed on each rack, the said prolongations beingof variable length regulable according to a code, a plurality of pushbuttons disposed in such manner as, when actuated according to saidcode, to displace the racks into a position wherein the slide, thesystem of levers and the locking bar unlock the roll-back so that thelatter can be rotated by said knob, and a manually operable cam platehaving a cam portion and a plate portion, and adapted to actsimultaneously, by its cam portion on said pin of the slide, and by itsplate portion on the prolongations of the racks, in order to bring thelocking bar into its looking position and to hold it there.

5. A combination lock, adapted particularly for household use,comprising a bolt, a knob for said the roll-back, racks acting on saidsmall pins and thereby controlling the displacement of the slide and thesystem of levers, and hence of the locking bar, the said racks eachhaving a groove disposed in the same corresponding position along thelength of the rack with which grooves said small pins cooperate,prolongations disposed on each rack, the said prolongations being ofvariable length regulable according to a code, a plurality of pushbuttons disposed in such manner as, when actuated according to saidcode, to displace the racks into a position wherein the slide, thesystem of levers, and the locking bar unlock the roll-back so that thelatter can be rotated by said knob, and a manually operable cam platehaving a cam portion and a plate portion, and adapted to actsimultaneously, by its cam portion on said other pin of the slide, andby its plate portion on the prolongations of the racks, in order tobring the locking bar into its locking position, and to hold it there.

6. A combination lock, adapted particularly for household use,comprising a bolt, a knob for said bolt, a roll-back removably securedto said knob and adapted to engage and operate said bolt, a locking barfor locking said roll-back, a slide and a system of levers connectedthereto and to said locking bar, a plurality of small pins on saidslide, another pin on said slide, a spring constantly tending to movesaid slide into a position wherein the locking bar is caused to unlockthe roll-back, racks acting on said small pins and thereby controllingthe displacement of the slide and the system of levers, and hence of thelocking bar, the said racks each having a groove disposed in the samecorresponding position along the length of the rack with which groovessaid small pins cooperate, prolongation disposed on each rack, the saidprolongations being of variable length regulable according to a code, aplurality of push buttons, elastic blades adapted to contact in theteeth of said racks, and each blade having a bent portion, the saidblades being disposed between said push buttons and said racks,depression of said push button a given number of times according to saidcode causing the corresponding blade to contact the corresponding rack,and under the elongation of its bent portion, to move the rack apredetermined number of steps, to displace the racks to a. positionwherein the slide, the system of levers, and the locking bar unlock theroll-back, so that the latter can be rotated by said knob, and amanually operable cam plate having a cam portion and adapted to actsimultaneously, by its cam portion on said other pin of the slide, andby its plate portion on the prolongations of the racks, in order tobring the locking bar into its looking position and to hold it there.

LE'ON LEBEAU.

